The ornamental design for a under shelfbracket with wedge, as shown and described.
FIG. 1 is a perspective view taken from the top, front, right side of the under shelf bracket with wedge showing my new design;
FIG. 2 is a perspective view taken from the bottom, back, right side thereof;
FIG. 3 is a front elevational view thereof;
FIG. 4 is a back elevational view thereof;
FIG. 5 is a elevational view of the right side thereof, the left side elevational view thereof being a mirror image of the right side elevational view thereof;
FIG. 6 is a top plan view thereof; and,
FIG. 7 is a bottom plan view thereof.
The broken lines illustrate portions of the under shelf bracket with wedge and form no part of the claimed design.